The phenomenon of thermal flutter of open cross section storable tubular extendible member (STEM) spacecraft booms was first observed in OGO IV and subsequently on a number of other satellites. Theoretical work ultimately ascribed the anomalous, undamped oscillations to the low torsional rigidity of the open section booms. This was confirmed when 'zippered' cross section booms, with substantially higher torsional rigidity, were later flown without exhibiting thermal flutter. However, zippered STEM booms generally have sizeable torsional backlash zones. It is shown here that small amplitude thermoelastic limit cycling within this backlash zone is theoretically possible and is the likely explanation for undamped oscillations recorded on Voyager 1 and 2 in the early stages of the Voyager mission.
Thermoelastic limit cycling of zippered cross section spacecraft booms
1984-05-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
Thermoelastic instability of open-section booms
TIBKAT | 1968
|Thermoelastic instability of open section booms.
NTRS | 1968
|Thermoelastic Instability of Open-Section Booms
NTIS | 1969
|